06 chevy silverado 1500 starts and runs a few min. then dies i thought it may be the fuel pump so i changed it, brand new from GM started right then after a few min it died again any suggestions on what to check next?
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Jason,
The 2009 Chevy Silverado 1500 doesn't have a fuel pump relay. It has a fuel pump control module. If you are having an issue with your fuel pump and it is not the pump itself, just the cost of the fuel pump control module is about $177 from GM or about $95 after market.
Didn't know your motor size but have added a link that will give you a start searching.
Is this a 1500 Silverado? I looked at my database, didn't see pcmb fuse? These databases are not always correct. On some gm makes and models, the pcmb fuse supplies voltage to both the pcm and fuel pump. Unplug the fuel pump, see if fuse still blows? If it does, it's not the fuel pump. Can't rule out wiring circuits? Has this vehicle sat for a long time?
How many miles do you have on it? Might be time for a tune-up (new plugs, plug wires, etc.) Start with the simple things first - have you changed your fuel filter? Could also be bad gas - couple of bottles of Heet (alcohol) will help with this. Then move on to more things like a Vacuum leak, fuel pump.
sounds like your fuel pump is going out. One thought might be that the fuel filter is causing enough resistance to over heat the pump. I would check the fule pressure to determine a free flow of fuel.
Just from what you said it sounds like your vehicle might not be holding its residual pressure which means after you turn a vehicle off, your fuel injection system should hold a certain amount of pressure in the system, but if that pressure drops to fast your vehicle may have a hard time starting. Things to look for when you lose fuel pressure is the fuel pressure regulator may be leaking, fuel pump check valve,leaky fuel injector or they maybe a small leak in one of the fuel lines. I only suggested this cause i had a car with the similar problem.
i had the the same problem. did a fuel pressure check every thing was fine, except for a few sticky injectors. so i suggest get that checked befor doing anything else.
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